TRILOBITE GENERA AND SPECIES LIST
for Genera beginning with letter Z

Zacanthoides Walcott, 1888
Z. abbreviatus Resser, 1939a
Z. adjunctus Resser, 1939a
Z. alatus Resser, 1939b
Z. cnopus Walcott, 1917
Z. demissus Fritz, 1968 {Nevada]
Z. divergens Rasetti, 1951
Z. divergens divergens Sundberg, 1994
Z. divergens limbus Sundberg, 1994
Z. fronsilicinus Sundberg, 1994
Z. grabaui (Pack, 1906) [Spence Shale]
Z. cf. grabaui Pack, 1906 [Chisholm Shale]
Z. gradates Resser, 1939a
Z. holopygus Resser, 1939a
Z. idahoensis Walcott, 1908
Z. longipygus Rasetti, 1951
Z. planifrons Rasetti, 1951
Z. romingeri Resser, 1942
Z. serratus Resser, 1939a
Z. sexdentatus Rasetti, 1951
Z. submuticus Rasetti, 1951
Z. typicalis (Walcott, 1886)
Z. variacantha Palmer in Palmer & Halley, 1979
Z. walapai Sundberg, 1994
Z. sp. [Wheeler Formation]
Z. sp. [Carrara Fm.]
Z. sp. [Spence Fm. - which species is this?]
Z. sp. (Glossopleura Zone, Washington)
Z.? sp.
Z. sp. 2 [Wolsey Shale]
Z. n. sp. [Spence Shale]
Z. n. sp. [Chisholm Shale]
Zacanthopsina Palmer, 1964
Z. eperephes Palmer, 1964
Zacanthopsis Resser, 1938b
Z. contractus Palmer, 1964
Z. levis (Walcott, 1886)
Z. n. sp.
Z. sp. (Harkless Fm.)
Z. n. sp. 1 [Carrara Fm.]
Z. n. sp. [Metaline Formation] (Morgan, Personal Communication, 2007)